Lyrically, the title track revolves around an attractive woman. They Might Be Giants have directly claimed that this song is simply an "ode to getting it on."[1] The song states that "X, because it's extra, baby; Y, because it's extra, baby," to imply that the X and Y are extraneous, leaving only "S-E-X". However, it's possible to interpret the song as a depiction of a person with Klinefelter's syndrome — a person with two X chromosomes and a Y chromosome, or possibly a transgender person, as evidenced by the final lyrics of the song: "You gotta understand; she wants to be your man; she's got another plan". These theories have been denied by author John Flansburgh.[2]